Reference, Facts, News - Free and Family-friendly Resources - Refdesk.com

- refdesk.com

Refdesk is a free and family friendly web site indexing and reviewing quality, credible, and current Internet reference resources.

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RefDesk | Internet Reference Desk

- refdesk.org

RefDesk is the reference desk of the internet containing encyclopedias, dictionaries, atlas, maps, thesaurus, style guides, politics and more.

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Ref-desk.com

- ref-desk.com

  Not Applicable   $ 8.95